OEM Carrier 60VA Control Transformer 115/208/230V–24V for Model PH12NA036000AGAA

This is the factory OEM replacement control transformer for the Carrier PH12NA036000AGAA heat pump system. The transformer steps down line voltage (115, 208, or 230V) to the 24VAC low-voltage signal that powers the entire control circuit — thermostat, contactor coils, reversing valve solenoid, and safety circuits. When this transformer fails, the result is a completely unresponsive system: your thermostat goes blank, the unit won't start, and no fault codes appear on the board because even the control board has lost power.

• Specs: 60VA power rating | Primary: 115/208/230VAC, 50/60 Hz | Secondary: 24VAC | Foot-mount configuration | OEM Part Number: HT01AW229
• OEM vs Generic: This is a genuine Carrier Factory Authorized Part — not a universal substitute. OEM transformers are wound to exact VA tolerances, ensuring the control circuit is never under-powered during peak demand from multiple simultaneous loads (blower relay, contactor coil, zone boards).
• Install difficulty: 2/5 — Shut off all power at the disconnect and breaker before beginning. Tools needed: flathead and Phillips screwdrivers, wire stripper, multimeter (to verify 24VAC output after install). Label all low-voltage wires before disconnecting. Incorrect wiring of the primary taps for your supply voltage will damage the new transformer.
• Warranty: 1-year OEM factory warranty against defects in materials and workmanship. In-stock and ships same business day from our warehouse.

Compatibility: Engineered specifically for the Carrier PH12NA036000AGAA heat pump. Also cross-references to Carrier, Bryant, and Payne systems using OEM part HT01AW229 / HT01AW229A. Always verify your unit's control board voltage requirements and existing transformer VA rating on the data plate before ordering. Our technical team is available to confirm fitment prior to purchase — don't hesitate to reach out.